Refrigerating cabinet having an air-pump circuit



May 3, 1949. F. N. JAMES 2,468,932

REFRIQERATING CABINET HAVING AN AIR PUMP CIRCUIT Filed Nov. 29, 1946 2Sheets-Sheet 1 FRAZ IER N. JAMES INVENTOR.

ATTORNEY I May 3, 1949. I N. JAMES I 2,468,932

REFRIGERATING CABINET HAVING AN AIR PUMP CIRCUIT Filed Nov. 29, 1946 2Sheets-Sheet 2 INVENTOR.

ATTORNEY FRAYZIER- N. JAMES Patented M a, 1949 2,468,932 BEFBIGERATINGCABINET HAVING AN AIR-PUMP CIBCUI Frazier N. James, Dallas, Tcx.,assignor, by mesne assignments, of thirty-three and one-third per centto The Master Corporation, a corporation of Arkansas, thirty-three andone-third per cent to Frazier N. James, and thirty-three and mne-thirdper cent to Richard A. Gump Application November 29, 1946, Serial No.712,867

1 Claim. 1

This invention relates to refrigeration equip- 'ment and moreparticularly to dry cooling cabinets for bottled beveragesand'foodstuffs.

The principal object of the invention is to provide a cooling cabinetconsisting of lower. and 7 upper compartments, the latter compartmentbeing insulated against external temperature .influences and whose innerside walls are recessed to define elongated chambers in each of which isinstalled a refrigerating coil through which. a refrigerating, medium iscirculated-by a conventional refrigerating unit installed in the lowercompartment.

Continuing with a more detailed description of the drawings. referencenumeral ill denotes a cabinet whose side walls are inwardly convergenttowards the bottom to allow for "foot room for Another object of theinvention is to provide a 7 dry cooling or deep freezing cabinet inwhich the commodities placed therein for cooling or preservation arekept at low, uniformly distributed Y temperatures by a liner of amaterial having high heat conducting characteristics and which overliesand conceals the refrigerating coils and affords restricted passagewaysin communication with the coil recesses, through which air isrecirculated by artificial means adjacent one end of the cabinet.

Still another object of the'invention. is to provide a dry cooler ordeep freezer designed for economical operation in that repeated openingof the door of the cabinet, such as may occur when bottled beverages aredispensed therefrom, will have less effect to dissipate storedrefrigeration than in conventional cabinets for similar purposes. Thisis due to the fact that the refrigerating coils of the invention aremore or less isolated and shielded against the influence of warm airadmitted into the cabinet, yet are highly effective to quickly restoreoriginal low temperatures in the refrigerating compartment by conductionthrough the walls of the latter.

With the foregoing and other objects in view the invention has furtherreference to other features of accomplishment which will become apparentas the description proceeds when taken in connection with theaccompanying drawings wherein:

Figure 1 is a top perspective view of a dry cooler or deep freezerconstructed according to the present invention. I Figure 2 is a planview in section, taken on.

'line 2-2 on Figure 3.

Figure 3 is an end elevational view in vertical lower compartment of thecabinet.

one standing close to the cabinet. Casters ll support the cabinet forconvenient movement from place to place. The features identified at l2in Figure 1 are merely decorative.

The cabinet has two compartments, the lower compartment i3 containingthe refrigerating unit ll of conventional manufacture, operated by motorl5, and accessible through doors llat the front of the cabinet which arelouvered as shown,

for dissipation of heat.

. The upper or refrigerating compartment of the cabinet is completelyenclosed by insulating walls l'l, insulated closures or doors l8 and theinsulated horizontal partition I! which separates 1 the upper from thelower compartment. The

partition [9 is reinforced in the present case, by timbers 20, extendingfrom end to end of the cabinet.

It will be observed in Figure 3 particularly that the side walls l'l arelongitudinally recessed to define cavities 2i to accommodaterefrigerating coils 22 whose confronting faces are disposed inwardly ofthe top of the cavity which is defined by the overreaching edges 23 ofthe opening in the top of the cabinet. Lying flush with the edges 23 arethe side walls 24 of the liner or chamber 25, in which is stored thecommodity to be preserved in or dispensed from the cabinet. This chamberis closed except for a preferably circular opening 28 in each endthereof, adjacent one of which openings is a fan 21, operated by a smallmotor 28 to create a suction through the chamber 25, causing air tocirculate in the direction of the arrows, across the coils 22 andthrough the passages or spaces 25, in communication. with the coilrecesses 2i and which'are definedat each end of the cabinet by therelative spacing-of the walls of the latter and those of the chamber 25.

7 It is apparent thatby recessing the coils 22 and closing the recessesby the side walls of. the chamber 25 except at the ends. the coils areshielded against direct contact of warm air entering the chamber 25 whenthe doors it are opened,

I which they are frequently while dispensing bottled beverage from thecabinet. However, the circulation set up by the fan 21 establishes andmaintains uniform distribution of refrigerated air throughout thechamber 25. The stored refrigeration in the coil recesses 2l.quicklyre-.

stores the temperature in compartment 25 when temperatures for longperiods after the refrigerating unit It has been made inactive tocirculate a refrigerant through the coils 22 by way of the tubes 30.

In Figure 3 is shown a temperature indicator 3|, visible through anaperture 32 in one end wall of chamber 25.

Manifestly, the construction as shown and described is capable of somemodification and such modification as may be construed to fall withinthe scope and meaning of the appended claim is also considered to bewithin the spirit and intent of the invention.

What is claimed is:

In a dry cooling unit, the combination comprising a cabinet having upperand lower compartments and whose side walls are inwardly convergent atthe bottom thereof, a refrigerating unit in the lower of saidcompartments, said upper compartment being insulated against externaltemperature influences and whose interior side and end walls arelongitudinally recessed, a refrigerating coil lying wholly within eachof said sidewall recesses and through which a refrigerant is circulatedby said refrigerating unit, a removable commodity chamber within saidupper compartment whose side and end walls completely cover and separatesaid recesses from said chamber, the latter having an opening in eachend thereof communicating with the end recesses, means for establishingand maintaining suction through said openings to effect circulation ofair through said chamber and said coil recesses across said coils and ahinged cover closing the top of said cabinet and chamber.

FRAZIER. N. JAMES.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 2,226,395 Tanner Dec. 24, 19402,241,558 Read May 13, 194.1 2,322,882 Raskin June 29, 1943

